CN102917363A - Resource distributing method and device based on combined multi-point processing as well as base station - Google Patents

Resource distributing method and device based on combined multi-point processing as well as base station Download PDF

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Publication number
CN102917363A
CN102917363A CN2011102244026A CN201110224402A CN102917363A CN 102917363 A CN102917363 A CN 102917363A CN 2011102244026 A CN2011102244026 A CN 2011102244026A CN 201110224402 A CN201110224402 A CN 201110224402A CN 102917363 A CN102917363 A CN 102917363A
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resource
collaboration set
ratio
cooperation
division
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CN102917363B (en
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陈思
翟恒星
李湧
陈微
周文安
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ZTE Corp
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ZTE Corp
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Priority to PCT/CN2012/074868 priority patent/WO2013020394A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/02—Resource partitioning among network components, e.g. reuse partitioning
    • H04W16/04—Traffic adaptive resource partitioning
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/02—Resource partitioning among network components, e.g. reuse partitioning
    • H04W16/10—Dynamic resource partitioning

Abstract

The invention discloses a resource distributing method based on combined multi-point processing (CoMP); and the method comprises the steps as follows: each cell is used for dividing resources of frequencies according to the number of cooperation sets and dynamically adjusting division proportions of the resources on the basis of frequency according to resource proportions required by edge users of each cooperation set; a service cell and a cooperation cell of each cooperation set are used for interacting division proportions of the respective resources and determining the proportion of cooperation resources; and according to the proportion of the cooperation resources, the edge users and central users are dispatched to distribute resources; the invention further discloses a resource distributing device based on the CoMP and a base station; and through the adoption of the scheme disclosed by the invention, a resource distribution conflict problem can be solved and residues of the resources can be avoided.

Description

A kind of resource allocation methods, device and base station based on the associating Multipoint process
Technical field
The present invention relates to associating Multipoint process (CoMP, the Coordinated Multiple Point) technology in the wireless communication system, relate in particular to a kind of resource allocation methods based on CoMP, device and base station.
Background technology
At the beginning of 2008, International Telecommunications Union (ITU) has begun the formulation of the 4th third-generation mobile communication (4G) standard I MT_Advanced, wherein especially the cell edge spectrum efficiency has been proposed requirement.Senior Long Term Evolution (LTE-A) as 4G candidate standard is introduced the CoMP technology, improves the performance of cell edge.
For Cell Edge User, can receive the wireless signal from neighbor cell, and transmitting of Cell Edge User can be received by a plurality of evolution base stations (eNB) also.As shown in Figure 1, a plurality of eNB serve for Cell Edge User simultaneously, thereby strengthen the communication efficiency of edge customer, CoMP technology that Here it is.
At present, in the CoMP system, mainly contain two kinds of cooperation schemes: network determines that collaboration set scheme (Network-centric method) and user determine collaboration set scheme (UE-centric method).Network determines that the collaboration set scheme is to determine in advance all collaboration sets by network; Its advantage is simple, and overhead is little; Shortcoming is to lack flexibility, and the CoMP gain is limited.The user determines that the collaboration set scheme is to determine separately collaboration set by the user; Its advantage is that scheduling is flexible, and the CoMP gain is larger; Shortcoming is complicated, and overhead is large.
Determine can relate to following problem in the collaboration set scheme the user:
Resource allocation conflict: might be overlapping between the collaboration set.The subscriber equipment (UE) that belongs in the different collaboration sets might distribute identical time/frequency source block (RB, Resource Block), at this moment the problem of resource allocation conflict will occur to overlay cells/sector application.As shown in Figure 2, UE1, UE3 are the edge customer of collaboration set (sector 3, sector 4, sector 11), and UE2, UE4 are the edge customer of collaboration set (sector 6, sector 7, sector 11).UE7 and UE8 are the edge customer that belongs to other collaboration sets.Wherein collaboration set (sector 3, sector 4, sector 11) and collaboration set (sector 6, sector 7, sector 11) 11 overlap in the sector.RB0～RB6 is the time/frequency source block of giving edge customer.Suppose that collaboration set (sector 3, sector 4, sector 11) distributes to UE1 with RB0, collaboration set (sector 6, sector 7, sector 11) is distributed to UE2 with RB0.Because the RB0 of sector 11 can not distribute to UE1 and UE2 simultaneously, will clash when the RB0 of allocated sector 11 like this.Same, when other RB of allocated sector 11, also can clash.
The generation of remaining resource: when Serving cell and cooperation cell distribution RB, cooperation cell might have been distributed to for overlay cells and corresponding RB the edge customer of other collaboration sets, this moment, Serving cell and cooperation cell were consulted unsuccessfully, the corresponding RB of Serving cell does not distribute to edge customer, consulting but continue to select new RB and cooperation cell, just is edge customer distribution RB after consulting successfully.RB like this, originally becomes remaining resource owing to not distributing.As shown in Figure 2, because the RB2 of sector 3 has been assigned to UE7, the RB2 in the sector 11 has been assigned to UE2, so the RB2 of sector 4 can not distribute to collaboration set (sector 3, sector 4, sector 11) edge customer UE1 and UE3 in, and the RB2 of sector 4 just becomes remaining resource.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of resource allocation methods based on CoMP, device and base station, the solving resource distribution conflict problem, and it is remaining to avoid resource to occur.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of resource allocation methods based on CoMP provided by the invention, the method comprises:
The resource division of frequency is carried out according to the collaboration set number in each residential quarter, and the resource ratio required according to each collaboration set edge customer is based on the division proportion of frequency dynamic adjustresources;
The Serving cell of each collaboration set also determines to cooperate the resource ratio with the division proportion of the mutual separately resource of cooperation cell; Carrying out resource according to cooperation resource ratio scheduling edge customer and central user distributes.
In the such scheme, the resource division that frequency is carried out according to the collaboration set number in described each residential quarter is: each residential quarter according to the collaboration set number with resource by the frequency portioning, and in the resource of portioning, divide resource for each collaboration set according to the division principle of the resource of the corresponding different frequency of each collaboration set.
In the such scheme, each residential quarter of institute according to the collaboration set number with resource by the frequency portioning, and in the resource of portioning, divide resource for each collaboration set according to the division principle of the resource of the corresponding different frequency of each collaboration set, for:
To have the resource of the sector of 6 collaboration sets to be divided into 3 parts by frequency averaging, every portion is divided into left, center, right three parts, and wherein, the edge customer that left and right sides two parts frequency resource is allocated to two collaboration sets uses, and mid portion uses to the Serving cell central user.
In the such scheme, the described resource ratio required according to each collaboration set edge customer, based on the division proportion of frequency dynamic adjustresources, for:
The required resource ratio of each collaboration set edge customer is calculated in each residential quarter, and the resource ratio that each collaboration set takies in every part of resource that adjustment has been divided based on frequency dynamic guarantees that the resource ratio sum that collaboration set takies in every part of resource is not more than 1.
In the such scheme, the Serving cell of described each collaboration set also determines to cooperate the resource ratio with the division proportion of the mutual separately resource of cooperation cell, for:
The Serving cell of each collaboration set and cooperation cell are exchanged the separately division proportion of resource, and Serving cell selects the division proportion minimum value of resource to be the resource ratio that cooperates with cooperation cell.
In the such scheme, describedly carry out resource according to cooperation resource ratio scheduling edge customer and central user and be assigned as:
The Serving cell of each collaboration set adopts central dispatching or local scheduling to dispatch respectively edge customer with cooperation cell according to the resource ratio that cooperates and central user is carried out the resource distribution.
A kind of resource allocation device based on CoMP provided by the invention, this device comprises: resource division module, adjusting module, cooperation resource ratio-dependent module, scheduler module; Wherein,
The resource division module is for the resource division of each residential quarter being carried out frequency according to the collaboration set number;
Adjusting module is used for the resource ratio required according to each collaboration set edge customer, based on the division proportion of frequency dynamic adjustresources;
Cooperation resource ratio-dependent module is used for Serving cell and also determines to cooperate the resource ratio with the division proportion of the mutual separately resource of cooperation cell;
Scheduler module is used for Serving cell and carries out the resource distribution with cooperation cell according to cooperate resource ratio scheduling edge customer and central user.
In the such scheme, described resource division module, concrete be used for resource with each residential quarter according to the collaboration set number by the frequency portioning, and in the resource of portioning, divide resource for each collaboration set according to the division principle of the resource of the corresponding different frequency of each collaboration set.
In the such scheme, described adjusting module, concrete being used for calculated the required resource ratio of each collaboration set edge customer, and the resource ratio that each collaboration set takies in every part of resource that adjustment has been divided based on frequency dynamic guarantees that the resource ratio sum that collaboration set takies in every part of resource is not more than 1.
In the such scheme, described cooperation resource ratio-dependent module specifically is used for Serving cell and selects the division proportion minimum value of resource to be the resource ratio that cooperates with cooperation cell.
In the such scheme, described scheduler module specifically is used for according to cooperation resource ratio employing central dispatching or local scheduling is dispatched respectively edge customer and central user is carried out the resource distribution.
The present invention also provides a kind of resource based on CoMP to distribute the base station, and this base station comprises device mentioned above.
The invention provides a kind of resource allocation methods based on CoMP, device and base station, the resource division of frequency is carried out according to the collaboration set number in each residential quarter, and the resource ratio required according to each collaboration set edge customer is based on the division proportion of frequency dynamic adjustresources; The Serving cell of each collaboration set also determines to cooperate the resource ratio with the division proportion of the mutual separately resource of cooperation cell; Carrying out resource according to cooperation resource ratio scheduling edge customer and central user distributes; So, can the solving resource distribution conflict problem, and it is remaining to avoid resource to occur.
Description of drawings
Fig. 1 is the schematic diagram that a plurality of eNB serve for Cell Edge User simultaneously in the prior art;
Fig. 2 is the schematic diagram that the user determines the generation of the resource allocation conflict of collaboration set scheme and remaining resource in the prior art;
Fig. 3 is the schematic flow sheet that the present invention realizes a kind of resource allocation methods based on CoMP;
Fig. 4 is the network topology structure schematic diagram among the inventive method embodiment;
Fig. 5 is the example schematic of carrying out the resource division of frequency among the inventive method embodiment;
Fig. 6 is the structural representation that the present invention realizes a kind of resource allocation device based on CoMP.
Embodiment
Basic thought of the present invention is: the resource division of frequency is carried out according to the collaboration set number in each residential quarter, and the resource ratio required according to each collaboration set edge customer is based on the division proportion of frequency dynamic adjustresources; The Serving cell of each collaboration set also determines to cooperate the resource ratio with the division proportion of the mutual separately resource of cooperation cell; Carrying out resource according to cooperation resource ratio scheduling edge customer and central user distributes.
The present invention is described in further detail below by drawings and the specific embodiments.
The present invention realizes a kind of resource allocation methods based on CoMP, and as shown in Figure 3, the method comprises following step:
Step 101: the resource division of frequency is carried out in each residential quarter according to the collaboration set number;
Concrete, each residential quarter according to the collaboration set number with resource by the frequency portioning, and in the resource of portioning, divide resource for each collaboration set according to the division principle of the resource of the corresponding different frequency of each collaboration set;
Topological structure such as Fig. 4, the sector adjacent with sector 10 has 6, and the collaboration set that the edge customer in sector 10 can be selected has 6 kinds of situations, i.e. 6 potential collaboration sets, respectively (10,20), (10,3), (10,11), (10,12), (10,17), (10,21), (10,20); As shown in Figure 5, the resource of sector 10 can be divided into 3 parts by frequency averaging, every portion is divided into left, center, right three parts, wherein, the edge customer that left and right sides two parts frequency resource is allocated to two collaboration sets uses, and mid portion uses to the Serving cell central user, like this, although each collaboration set may overlap at physics, on frequency, distinguish;
Above-mentioned resource division to sector 10 also can be: with the resource of sector 10 by frequency partition for 3 parts of not waiting or on average be divided into more than 3 parts etc., as long as the resource of the equal corresponding different frequency of each collaboration set of assurance.
Step 102: the resource ratio that each residential quarter is required according to each collaboration set edge customer, based on the division proportion of frequency dynamic adjustresources;
Concrete, the required resource ratio of each collaboration set edge customer is calculated in each residential quarter, and the resource ratio that each collaboration set takies in every part of resource that adjustment has been divided based on frequency dynamic guarantees that the resource ratio sum that collaboration set takies in every part of resource is not more than 1;
Take Fig. 5 as example, calculate respectively as Serving cell in 3 parts of frequency resources of average division sector 10, the resource ratio that each collaboration set edge customer is required; Computational methods can be with reference to the method that proposes among the 3GPP motion R1-091415, that is:
β j = Σ n = 1 N cell - edge R j , n Σ k = 1 K server R j , k , server + Σ k = 1 K cooperate R j , k , cooperate
β wherein jBe the required resource ratio of the edge customer of collaboration set j; R J, nBe n transmission rate that edge customer requires in the collaboration set j; R J, k, serverTransmission rate for k customer requirements in the collaboration set j Serving cell; R J, k, cooperateFor k customer requirements in the collaboration set j cooperation cell sends digit rate; N Cell-edgeEdge customer number for collaboration set; K Server, K CooperateBe respectively all number of users in Serving cell and the cooperation cell;
Take a resource of Fig. 5 as example, with β jAs the required resource ratio of left side collaboration set edge customer, β iAs the required resource ratio of right side collaboration set edge customer, then at β j+ β i≤ 1 o'clock, the resource ratio beta that the left side collaboration set takies in this part resource J, newThe resource ratio beta that in this part resource, takies with the right side collaboration set I, newFor:
β j，new＝β j
β i，new＝β i
At β j+ β i＞1 o'clock, if β j≤ β i, the left side resource ratio beta that in this part resource, takies of collaboration set then J, newThe resource ratio beta that in this part resource, takies with the right side collaboration set I, newFor:
β j，new＝1-β i
β i，new＝β i
If β j＞β i, the left side resource ratio beta that in this part resource, takies of collaboration set then J, newThe resource ratio beta that in this part resource, takies with the right side collaboration set J, newFor:
β j，new＝β j
β i，new＝1-β j
Like this, Serving cell can obtain the division proportion β of own resource according to the resource ratio of the collaboration set in 3 parts of resources K, new, k ∈ Φ, wherein, Φ is the set of Serving cell collaboration set; Equally, each cooperation cell also can calculate the division proportion β ' of resource separately K, new, k ∈ Φ ', wherein Φ ' is the set of described cooperation cell collaboration set.
Step 103: the Serving cell of each collaboration set also determines to cooperate the resource ratio with the division proportion of the mutual separately resource of cooperation cell;
Concrete, the Serving cell of each collaboration set and cooperation cell are exchanged β K, newAnd β ' K, new, Serving cell selects the division proportion minimum value of resource to be the resource ratio beta that cooperates with cooperation cell K, last: β K, last=min (β K, new, β ' K, new), k ∈ Φ; If Serving cell has remaining resource, then return central user to use;
In this step, user profile is upgraded relatively slow, but β of long period interactive refreshing K, newAnd β ' K, newValue.
Step 104: the Serving cell of each collaboration set carries out resource with cooperation cell according to cooperate resource ratio scheduling edge customer and central user and distributes;
Concrete, the Serving cell of each collaboration set adopts central dispatching or local scheduling to dispatch respectively edge customer with cooperation cell according to the resource ratio that cooperates and central user is carried out the resource distribution, and concrete dispatching algorithm can adopt poll, equitable proportion scheduling algorithm according to actual conditions.
In the present embodiment, because each collaboration set is distinguished on frequency, not only solved because of the overlapping resource allocation conflict problem that causes between the collaboration set, and avoided the appearance of remaining resource, need not consider that remaining resource reclaims and the problem of reallocating.
In order to realize said method, the present invention also provides a kind of resource allocation device based on CoMP, this device is arranged in the base station of CoMP transmission, and as shown in Figure 6, this device comprises: resource division module 61, adjusting module 62, cooperation resource ratio-dependent module 63, scheduler module 64; Wherein,
Resource division module 61 is for the resource division of each residential quarter being carried out frequency according to the collaboration set number;
Described resource division module 61, concrete be used for resource with each residential quarter according to the collaboration set number by the frequency portioning, and in the resource of portioning, divide resource for each collaboration set according to the division principle of the resource of the corresponding different frequency of each collaboration set;
Adjusting module 62 is used for the resource ratio required according to each collaboration set edge customer, based on the division proportion of frequency dynamic adjustresources;
Described adjusting module 62, the concrete required resource ratio of each collaboration set edge customer of calculating that is used for, the resource ratio that each collaboration set takies in every part of resource that adjustment has been divided based on frequency dynamic guarantees that the resource ratio sum that collaboration set takies in every part of resource is not more than 1;
Cooperation resource ratio-dependent module 63 is used for Serving cell and also determines to cooperate the resource ratio with the division proportion of the mutual separately resource of cooperation cell;
Described cooperation resource ratio-dependent module 63 specifically is used for Serving cell and selects the division proportion minimum value of resource to be the resource ratio that cooperates with cooperation cell;
Scheduler module 64 is used for Serving cell and carries out the resource distribution with cooperation cell according to cooperate resource ratio scheduling edge customer and central user;
Described scheduler module 64 specifically is used for according to cooperation resource ratio employing central dispatching or local scheduling is dispatched respectively edge customer and central user is carried out the resource distribution.
Based on said apparatus, the present invention also provides a kind of resource based on CoMP to distribute the base station, and this base station comprises device as shown in Figure 6, comprising: resource division module 61, adjusting module 62, cooperation resource ratio-dependent module 63, scheduler module 64; Wherein,
Resource division module 61 is for the resource division of each residential quarter being carried out frequency according to the collaboration set number;
Described resource division module 61, concrete be used for resource with each residential quarter according to the collaboration set number by the frequency portioning, and in the resource of portioning, divide resource for each collaboration set according to the division principle of the resource of the corresponding different frequency of each collaboration set;
Adjusting module 62 is used for the resource ratio required according to each collaboration set edge customer, based on the division proportion of frequency dynamic adjustresources;
Described adjusting module 62, the concrete required resource ratio of each collaboration set edge customer of calculating that is used for, the resource ratio that each collaboration set takies in every part of resource that adjustment has been divided based on frequency dynamic guarantees that the resource ratio sum that collaboration set takies in every part of resource is not more than 1;
Cooperation resource ratio-dependent module 63 is used for Serving cell and also determines to cooperate the resource ratio with the division proportion of the mutual separately resource of cooperation cell;
Described cooperation resource ratio-dependent module 63 specifically is used for Serving cell and selects the division proportion minimum value of resource to be the resource ratio that cooperates with cooperation cell;
Scheduler module 64 is used for Serving cell and carries out the resource distribution with cooperation cell according to cooperate resource ratio scheduling edge customer and central user;
Described scheduler module 64 specifically is used for according to cooperation resource ratio employing central dispatching or local scheduling is dispatched respectively edge customer and central user is carried out the resource distribution.
The above is preferred embodiment of the present invention only, is not for limiting protection scope of the present invention.

Claims (12)

  1. One kind based on the associating Multipoint process (CoMP) resource allocation methods, it is characterized in that the method comprises:
    The resource division of frequency is carried out according to the collaboration set number in each residential quarter, and the resource ratio required according to each collaboration set edge customer is based on the division proportion of frequency dynamic adjustresources;
    The Serving cell of each collaboration set also determines to cooperate the resource ratio with the division proportion of the mutual separately resource of cooperation cell; Carrying out resource according to cooperation resource ratio scheduling edge customer and central user distributes.
  2. 2. resource allocation methods according to claim 1, it is characterized in that, the resource division that frequency is carried out according to the collaboration set number in described each residential quarter is: each residential quarter according to the collaboration set number with resource by the frequency portioning, and in the resource of portioning, divide resource for each collaboration set according to the division principle of the resource of the corresponding different frequency of each collaboration set.
  3. 3. resource allocation methods according to claim 2, it is characterized in that, each residential quarter of institute according to the collaboration set number with resource by the frequency portioning, and in the resource of portioning, divide resource for each collaboration set according to the division principle of the resource of the corresponding different frequency of each collaboration set, for:
    To have the resource of the sector of 6 collaboration sets to be divided into 3 parts by frequency averaging, every portion is divided into left, center, right three parts, and wherein, the edge customer that left and right sides two parts frequency resource is allocated to two collaboration sets uses, and mid portion uses to the Serving cell central user.
  4. 4. each described resource allocation methods is characterized in that according to claim 1-3, the described resource ratio required according to each collaboration set edge customer, and based on the division proportion of frequency dynamic adjustresources, for:
    The required resource ratio of each collaboration set edge customer is calculated in each residential quarter, and the resource ratio that each collaboration set takies in every part of resource that adjustment has been divided based on frequency dynamic guarantees that the resource ratio sum that collaboration set takies in every part of resource is not more than 1.
  5. 5. each described resource allocation methods is characterized in that according to claim 1-3, and the Serving cell of described each collaboration set also determines to cooperate the resource ratio with the division proportion of the mutual separately resource of cooperation cell, for:
    The Serving cell of each collaboration set and cooperation cell are exchanged the separately division proportion of resource, and Serving cell selects the division proportion minimum value of resource to be the resource ratio that cooperates with cooperation cell.
  6. 6. each described resource allocation methods is characterized in that according to claim 1-3, describedly carries out resource according to cooperation resource ratio scheduling edge customer and central user and is assigned as:
    The Serving cell of each collaboration set adopts central dispatching or local scheduling to dispatch respectively edge customer with cooperation cell according to the resource ratio that cooperates and central user is carried out the resource distribution.
  7. 7. the resource allocation device based on CoMP is characterized in that, this device comprises: resource division module, adjusting module, cooperation resource ratio-dependent module, scheduler module; Wherein,
    The resource division module is for the resource division of each residential quarter being carried out frequency according to the collaboration set number;
    Adjusting module is used for the resource ratio required according to each collaboration set edge customer, based on the division proportion of frequency dynamic adjustresources;
    Cooperation resource ratio-dependent module is used for Serving cell and also determines to cooperate the resource ratio with the division proportion of the mutual separately resource of cooperation cell;
    Scheduler module is used for Serving cell and carries out the resource distribution with cooperation cell according to cooperate resource ratio scheduling edge customer and central user.
  8. 8. resource allocation device according to claim 7, it is characterized in that, described resource division module, concrete be used for resource with each residential quarter according to the collaboration set number by the frequency portioning, and in the resource of portioning, divide resource for each collaboration set according to the division principle of the resource of the corresponding different frequency of each collaboration set.
  9. 9. resource allocation device according to claim 8, it is characterized in that, described adjusting module, the concrete required resource ratio of each collaboration set edge customer of calculating that is used for, the resource ratio that each collaboration set takies in every part of resource that adjustment has been divided based on frequency dynamic guarantees that the resource ratio sum that collaboration set takies in every part of resource is not more than 1.
  10. 10. resource allocation device according to claim 7 is characterized in that, described cooperation resource ratio-dependent module specifically is used for Serving cell and selects the division proportion minimum value of resource to be the resource ratio that cooperates with cooperation cell.
  11. 11. resource allocation device according to claim 7 is characterized in that, described scheduler module specifically is used for according to cooperation resource ratio employing central dispatching or local scheduling is dispatched respectively edge customer and central user is carried out the resource distribution.
  12. 12. the resource based on CoMP is distributed the base station, it is characterized in that this base station comprises each described device of claim 7 to 11.
CN201110224402.6A 2011-08-05 2011-08-05 A kind of resource allocation methods, device and base station based on joint Multipoint process Expired - Fee Related CN102917363B (en)

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